power: bcl: Fetch the latest SoC value after BCL enable

Fetch the latest SoC value after BCL is enabled.
This is to ensure that BCL will react to a current low
SoC event, instead of waiting for a change in power state
callback from BMS.

Change-Id: I8973e7424f95cac5d6a1c76f04a9d4bd11b9ba8b
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>